abstracted map data into a class to allow for zooming out

2 files changed, 316 insertions, 177 deletions

@@ -7,6 +7,7 @@
 #include <fov.h>
 #include <iostream>
 #include "util.h"
+#include "map.h"
 
 class sdl_error : public std::logic_error {
 public:
@@ -75,49 +76,51 @@ struct Kickup {
   size_t chain;
 };
 
-class Map {
+struct MapData {
+  Tile tile = Tile::Floor;
+  bool lit = false;
+  bool wasLit = false;
+  double visibility = 0.0;
+};
+
+class Game {
 public:
 
-  Map() :
-    tiles(VIEW_WIDTH*VIEW_HEIGHT, Tile::Floor),
-    lighting(VIEW_WIDTH*VIEW_HEIGHT, false),
-    lightStrength(VIEW_WIDTH*VIEW_HEIGHT, 0.0)
+  Game() :
+    map(-VIEW_WIDTH/2, -VIEW_HEIGHT/2, VIEW_WIDTH, VIEW_HEIGHT)
   {
   }
 
-  std::vector<Tile> tiles;
-  std::vector<bool> lighting;
-  std::vector<bool> oldLighting;
-  std::vector<double> lightStrength;
+  Map<MapData> map;
   std::list<Kickup> kickups;
   int lightedSpots = 0;
   bool dirtyLighting = true;
   size_t numLamps = 0;
   size_t numDust = 0;
-};
 
-int player_x = VIEW_WIDTH / 2;
-int player_y = VIEW_HEIGHT / 2;
-bool renderPlayer = true;
+  int player_x = 0;
+  int player_y = 0;
+  bool renderPlayer = true;
+};
 
 void render(
   SDL_Renderer* ren,
-  const Map& map,
+  const Game& game,
   bool drawDark = true)
 {
   SDL_SetRenderDrawColor(ren, rand() % 255, rand() % 255, rand() % 255, 255);
   SDL_RenderClear(ren);
 
-  for (int y = 0; y < VIEW_HEIGHT; y++)
+  for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
   {
-    for (int x = 0; x < VIEW_WIDTH; x++)
+    for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
     {
       bool draw = true;
 
-      if ((player_x == x && player_y == y) && renderPlayer)
+      if ((game.player_x == x && game.player_y == y) && game.renderPlayer)
       {
         SDL_SetRenderDrawColor(ren, 255, 255, 0, 255);
-      } else if (!map.lighting.at(x+VIEW_WIDTH*y))
+      } else if (!game.map.at(x,y).lit)
       {
         if (drawDark)
         {
@@ -126,7 +129,7 @@ void render(
           draw = false;
         }
       } else {
-        switch (map.tiles.at(x+y*VIEW_WIDTH))
+        switch (game.map.at(x,y).tile)
         {
           case Tile::Floor:
           {
@@ -156,10 +159,15 @@ void render(
 
       if (draw)
       {
-        SDL_Rect rect{x*TILE_WIDTH, y*TILE_HEIGHT, TILE_WIDTH, TILE_HEIGHT};
+        SDL_Rect rect {
+          game.map.getTrueX(x) * TILE_WIDTH,
+          game.map.getTrueY(y) * TILE_HEIGHT,
+          TILE_WIDTH,
+          TILE_HEIGHT};
+
         SDL_RenderFillRect(ren, &rect);
 
-        int alpha = (1.0 - map.lightStrength.at(x+y*VIEW_WIDTH)) * 255;
+        int alpha = (1.0 - game.map.at(x,y).visibility) * 255;
         SDL_SetRenderDrawColor(ren, 40, 40, 40, alpha);
         SDL_RenderFillRect(ren, &rect);
       }
@@ -169,115 +177,132 @@ void render(
   SDL_RenderPresent(ren);
 }
 
-void incrementIfSet(Map& map, int& count, int x, int y, int w, int h, Tile val = Tile::Wall)
+void incrementIfSet(Game& game, int& count, int x, int y, Tile val = Tile::Wall)
 {
-  if ((x >= 0) && (x < w) && (y >= 0) && (y < h) && (map.tiles[x+w*y] == val))
+  if (game.map.inBounds(x, y) && game.map.at(x,y).tile == val)
   {
     count++;
   }
 }
 
-void tick(Map& map, int x1 = 0, int y1 = 0, int x2 = VIEW_WIDTH, int y2 = VIEW_HEIGHT, bool onlyDark = false)
+void tick(
+  Game& game,
+  int x1,
+  int y1,
+  int x2,
+  int y2,
+  bool invert = false,
+  bool onlyDark = false)
 {
-  std::vector<Tile> temp(map.tiles);
+  Map<MapData> temp(game.map);
 
-  for (int y = std::max(y1, 0); y < std::min(y2, VIEW_HEIGHT); y++)
+  for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
   {
-    for (int x = std::max(x1, 0); x < std::min(x2, VIEW_WIDTH); x++)
+    for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
     {
-      if (onlyDark && map.lighting[x+y*VIEW_WIDTH])
+      if (invert == (x >= x1 && x < x2 && y >= y1 && y < y2))
+      {
+        continue;
+      }
+
+      if (onlyDark && game.map.at(x,y).lit)
       {
         continue;
       }
 
-      if (map.tiles[x+y*VIEW_WIDTH] == Tile::Lamp)
+      if (game.map.at(x,y).tile == Tile::Lamp)
       {
         continue;
       }
 
       int count = 0;
 
-      incrementIfSet(map, count, x-1, y-1, VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x-1, y  , VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x-1, y+1, VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x  , y-1, VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x  , y  , VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x  , y+1, VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x+1, y-1, VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x+1, y  , VIEW_WIDTH, VIEW_HEIGHT);
-      incrementIfSet(map, count, x+1, y+1, VIEW_WIDTH, VIEW_HEIGHT);
+      incrementIfSet(game, count, x-1, y-1);
+      incrementIfSet(game, count, x-1, y  );
+      incrementIfSet(game, count, x-1, y+1);
+      incrementIfSet(game, count, x  , y-1);
+      incrementIfSet(game, count, x  , y  );
+      incrementIfSet(game, count, x  , y+1);
+      incrementIfSet(game, count, x+1, y-1);
+      incrementIfSet(game, count, x+1, y  );
+      incrementIfSet(game, count, x+1, y+1);
 
       if (count >= 5)
       {
-        temp[x+VIEW_WIDTH*y] = Tile::Wall;
+        temp.at(x,y).tile = Tile::Wall;
       } else {
-        temp[x+VIEW_WIDTH*y] = Tile::Floor;
+        temp.at(x,y).tile = Tile::Floor;
       }
     }
   }
 
-  map.tiles = temp;
+  game.map = std::move(temp);
+}
+
+void tick(Game& game, bool onlyDark = false)
+{
+  tick(
+    game,
+    game.map.getLeft(),
+    game.map.getTop(),
+    game.map.getRight(),
+    game.map.getBottom(),
+    false,
+    onlyDark);
 }
 
-void movePlayer(int x, int y, Map& map)
+void movePlayer(Game& game, int x, int y)
 {
-  if ((x >= 0) && (x < VIEW_WIDTH) && (y >= 0) && (y < VIEW_HEIGHT) &&
-      map.tiles[x+VIEW_WIDTH*y] == Tile::Floor)
+  if (game.map.inBounds(x, y) && game.map.at(x,y).tile == Tile::Floor)
   {
-    if (map.tiles[player_x+player_y*VIEW_WIDTH] == Tile::Floor)
+    if (game.map.at(game.player_x, game.player_y).tile == Tile::Floor)
     {
-      map.tiles[player_x+player_y*VIEW_WIDTH] = Tile::Dust;
-      map.numDust++;
+      game.map.at(game.player_x, game.player_y).tile = Tile::Dust;
+      game.numDust++;
     }
 
-    player_x = x;
-    player_y = y;
+    game.player_x = x;
+    game.player_y = y;
 
-    map.dirtyLighting = true;
+    game.dirtyLighting = true;
   }
 }
 
-void setIfValid(Map& map, int x, int y, Tile val)
+void recalculateLighting(Game& game, fov_settings_type* fov)
 {
-  if ((x >= 0) && (x < VIEW_WIDTH) && (y >= 0) && (y < VIEW_HEIGHT))
+  game.lightedSpots = 0;
+
+  for (MapData& md : game.map.data())
   {
-    map.tiles[x+VIEW_WIDTH*y] = val;
+    md.wasLit = md.lit;
+    md.lit = false;
+    md.visibility = 0.0;
   }
-}
-
-void recalculateLighting(Map& map, fov_settings_type* fov)
-{
-  map.oldLighting = map.lighting;
-  map.lighting = std::vector<bool>(VIEW_WIDTH*VIEW_HEIGHT, false);
-  map.lightStrength = std::vector<double>(VIEW_WIDTH*VIEW_HEIGHT, 0.0);
-  map.lightedSpots = 0;
 
   fov_settings_set_opacity_test_function(
     fov,
-    [] (void* map, int x, int y) {
-      return
-        x >= 0 &&
-        x < VIEW_WIDTH &&
-        y >= 0 &&
-        y < VIEW_HEIGHT &&
-        static_cast<Map*>(map)->tiles.at(x+VIEW_WIDTH*y) == Tile::Wall;
+    [] (void* data, int x, int y) {
+      Game& game = *static_cast<Game*>(data);
+
+      return game.map.inBounds(x,y) && game.map.at(x,y).tile == Tile::Wall;
     });
 
   fov_settings_set_apply_lighting_function(
     fov,
-    [] (void* map, int x, int y, int dx, int dy, void*) {
-      if ((x >= 0) && (x < VIEW_WIDTH) && (y >= 0) && (y < VIEW_HEIGHT))
+    [] (void* data, int x, int y, int dx, int dy, void*) {
+      Game& game = *static_cast<Game*>(data);
+
+      if (game.map.inBounds(x, y))
       {
-        Map& m = *static_cast<Map*>(map);
-        if (!m.lighting[x+VIEW_WIDTH*y])
+        if (!game.map.at(x,y).lit)
         {
-          m.lightedSpots++;
+          game.lightedSpots++;
         }
 
-        m.lighting[x+VIEW_WIDTH*y] = true;
+        game.map.at(x,y).lit = true;
 
-        m.lightStrength[x+VIEW_WIDTH*y] = std::max(
-          m.lightStrength[x+VIEW_WIDTH*y],
+        game.map.at(x,y).visibility = std::max(
+          game.map.at(x,y).visibility,
           std::pow(
             std::max(
               0.0,
@@ -286,29 +311,29 @@ void recalculateLighting(Map& map, fov_settings_type* fov)
       }
     });
 
-  for (int y = 0; y < VIEW_HEIGHT; y++)
+  for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
   {
-    for (int x = 0; x < VIEW_WIDTH; x++)
+    for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
     {
-      if ((player_x == x && player_y == y && renderPlayer) ||
-          map.tiles[x+VIEW_WIDTH*y] == Tile::Dust ||
-          map.tiles[x+VIEW_WIDTH*y] == Tile::Lamp)
+      if ((game.player_x == x && game.player_y == y && game.renderPlayer) ||
+          game.map.at(x,y).tile == Tile::Dust ||
+          game.map.at(x,y).tile == Tile::Lamp)
       {
-        fov_circle(fov, static_cast<void*>(&map), nullptr, x, y, RADIUS);
+        fov_circle(fov, static_cast<void*>(&game), nullptr, x, y, RADIUS);
 
-        map.lighting[x+VIEW_WIDTH*y] = true;
-        map.lightStrength[x+VIEW_WIDTH*y] = 1.0;
+        game.map.at(x,y).lit = true;
+        game.map.at(x,y).visibility = 1.0;
       }
     }
   }
 
-  map.dirtyLighting = false;
+  game.dirtyLighting = false;
 }
 
-void processKeys(Map& map, const Input& keystate)
+void processKeys(Game& game, const Input& keystate)
 {
-  int px = player_x;
-  int py = player_y;
+  int px = game.player_x;
+  int py = game.player_y;
 
   if (keystate.up)
   {
@@ -330,13 +355,13 @@ void processKeys(Map& map, const Input& keystate)
     px++;
   }
 
-  if (!(player_x == px && player_y == py))
+  if (!(game.player_x == px && game.player_y == py))
   {
-    movePlayer(px, py, map);
+    movePlayer(game, px, py);
   }
 }
 
-void kickUpDust(Map& map, int x, int y, size_t chain)
+void kickUpDust(Game& game, int x, int y, size_t chain)
 {
   Kickup dk;
   dk.x = x;
@@ -345,71 +370,67 @@ void kickUpDust(Map& map, int x, int y, size_t chain)
   dk.cur = 0;
   dk.radius = RADIUS + (chain + 1) * (chain + 1);
 
-  map.kickups.push_back(dk);
+  game.kickups.push_back(dk);
 }
 
-void popLamp(Map& map, int x, int y, size_t chain)
+void popLamp(Game& game, int x, int y, size_t chain)
 {
-  if (map.tiles[x+VIEW_WIDTH*y] == Tile::Lamp)
+  if (game.map.at(x,y).tile == Tile::Lamp)
   {
-    map.numLamps--;
+    game.numLamps--;
   }
 
-  map.tiles[x+VIEW_WIDTH*y] = Tile::Dust;
-  map.numDust++;
-  map.dirtyLighting = true;
+  game.map.at(x,y).tile = Tile::Dust;
+  game.numDust++;
+  game.dirtyLighting = true;
 
-  kickUpDust(map, x, y, chain);
+  kickUpDust(game, x, y, chain);
 }
 
-void processKickup(Map& map)
+void processKickup(Game& game)
 {
-  for (Kickup& kickup : map.kickups)
+  for (Kickup& kickup : game.kickups)
   {
     kickup.cur++;
 
-    if (map.tiles[kickup.x+VIEW_WIDTH*kickup.y] == Tile::Floor)
+    if (game.map.at(kickup.x, kickup.y).tile == Tile::Floor)
     {
-      map.tiles[kickup.x+VIEW_WIDTH*kickup.y] = Tile::Dust;
-      map.numDust++;
+      game.map.at(kickup.x, kickup.y).tile = Tile::Dust;
+      game.numDust++;
     }
 
     std::unique_ptr<fov_settings_type> dusty(new fov_settings_type);
     fov_settings_set_opacity_test_function(
       dusty.get(),
-      [] (void* map, int x, int y) {
-        return
-          x >= 0 &&
-          x < VIEW_WIDTH &&
-          y >= 0 &&
-          y < VIEW_HEIGHT &&
-          static_cast<Map*>(map)->tiles.at(x+VIEW_WIDTH*y) == Tile::Wall;
+      [] (void* data, int x, int y) {
+        Game& game = *static_cast<Game*>(data);
+
+        return game.map.inBounds(x,y) && game.map.at(x,y).tile == Tile::Wall;
       });
 
     fov_settings_set_apply_lighting_function(
       dusty.get(),
       [] (void* data, int x, int y, int, int, void* source) {
-        Map& map = *static_cast<Map*>(data);
+        Game& game = *static_cast<Game*>(data);
         Kickup& kickup = *static_cast<Kickup*>(source);
 
-        if ((x >= 0) && (x < VIEW_WIDTH) &&
-            (y >= 0) && (y < VIEW_HEIGHT))
+        if (game.map.inBounds(x,y))
         {
-          if (map.tiles[x+VIEW_WIDTH*y] == Tile::Floor)
+          if (game.map.at(x,y).tile == Tile::Floor)
           {
-            map.tiles[x+VIEW_WIDTH*y] = Tile::Dust;
-            map.numDust++;
-            map.dirtyLighting = true;
-          } else if (map.tiles[x+VIEW_WIDTH*y] == Tile::Lamp)
+            game.map.at(x,y).tile = Tile::Dust;
+            game.numDust++;
+            game.dirtyLighting = true;
+          } else if (game.map.at(x,y).tile == Tile::Lamp)
           {
-            popLamp(map, x, y, kickup.chain + 1);
+            popLamp(game, x, y, kickup.chain + 1);
           }
         }
       });
 
     fov_circle(
       dusty.get(),
-      static_cast<void*>(&map),
+      static_cast<void*>(&game),
       static_cast<void*>(&kickup),
       kickup.x,
       kickup.y,
@@ -417,7 +438,7 @@ void processKickup(Map& map)
   }
 
   erase_if(
-    map.kickups,
+    game.kickups,
     [] (const Kickup& kickup) {
       return kickup.cur == kickup.radius;
     });
@@ -456,25 +477,22 @@ int main(int, char**)
 
     SDL_SetRenderDrawBlendMode(ren.get(), SDL_BLENDMODE_BLEND);
 
-    Map map;
+    Game game;
 
     std::unique_ptr<fov_settings_type> fov(new fov_settings_type());
     fov_settings_init(fov.get());
 
-    for (int y = 0; y < VIEW_HEIGHT; y++)
+    for (MapData& md : game.map.data())
     {
-      for (int x = 0; x < VIEW_WIDTH; x++)
+      if (std::bernoulli_distribution(0.5)(rng))
       {
-        if (std::bernoulli_distribution(0.5)(rng))
-        {
-          map.tiles[x+y*VIEW_WIDTH] = Tile::Wall;
-        }
+        md.tile = Tile::Wall;
       }
     }
 
-    tick(map);
-    tick(map);
-    tick(map);
+    tick(game);
+    tick(game);
+    tick(game);
 
     bool quit = false;
     LoseState losing = LoseState::None;
@@ -531,26 +549,24 @@ int main(int, char**)
             {
               if (losing == LoseState::None)
               {
-                if (map.tiles[player_x+VIEW_WIDTH*player_y] == Tile::Floor)
+                if (game.map.at(game.player_x, game.player_y).tile ==
+                      Tile::Floor)
                 {
-                  map.tiles[player_x+VIEW_WIDTH*player_y] = Tile::Lamp;
-                  map.numLamps++;
-                  map.dirtyLighting = true;
-                  kickUpDust(map, player_x, player_y, 0);
+                  game.map.at(game.player_x, game.player_y).tile = Tile::Lamp;
+                  game.numLamps++;
+                  game.dirtyLighting = true;
+                  kickUpDust(game, game.player_x, game.player_y, 0);
 
                   for (int i = 0; i < 5; i++)
                   {
-                    processKeys(map, keystate);
+                    processKeys(game, keystate);
 
                     tick(
-                      map,
-                      player_x - (RADIUS - 1),
-                      player_y - (RADIUS - 1),
-                      player_x + RADIUS,
-                      player_y + RADIUS);
-
-                    //render(ren.get(), map, false);
-                    //SDL_Delay(30);
+                      game,
+                      game.player_x - (RADIUS - 1),
+                      game.player_y - (RADIUS - 1),
+                      game.player_x + RADIUS,
+                      game.player_y + RADIUS);
                   }
                 }
               }
@@ -572,21 +588,18 @@ int main(int, char**)
 
       while (dustAcc >= dustDt)
       {
-        for (int y = 0; y < VIEW_HEIGHT; y++)
+        for (MapData& md : game.map.data())
         {
-          for (int x = 0; x < VIEW_WIDTH; x++)
+          if (md.tile == Tile::Dust)
           {
-            if (map.tiles[x+y*VIEW_WIDTH] == Tile::Dust)
-            {
-              map.tiles[x+y*VIEW_WIDTH] = Tile::Floor;
-              map.dirtyLighting = true;
-            }
+            md.tile = Tile::Floor;
+            game.dirtyLighting = true;
           }
         }
 
-        map.numDust = 0;
+        game.numDust = 0;
 
-        processKickup(map);
+        processKickup(game);
 
         dustAcc -= dustDt;
       }
@@ -597,7 +610,7 @@ int main(int, char**)
         {
           while (inputAcc >= inputDt)
           {
-            processKeys(map, keystate);
+            processKeys(game, keystate);
 
             inputAcc -= inputDt;
           }
@@ -607,9 +620,9 @@ int main(int, char**)
 
         case LoseState::PoppingLamps:
         {
-          if (map.numLamps == 0)
+          if (game.numLamps == 0)
           {
-            if (map.numDust == 0)
+            if (game.numDust == 0)
             {
               losing = LoseState::PoppingPlayer;
             }
@@ -620,11 +633,11 @@ int main(int, char**)
             {
               std::vector<std::tuple<int, int>> lamps;
 
-              for (int y = 0; y < VIEW_HEIGHT; y++)
+              for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
               {
-                for (int x = 0; x < VIEW_WIDTH; x++)
+                for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
                 {
-                  if (map.tiles[x+VIEW_WIDTH*y] == Tile::Lamp)
+                  if (game.map.at(x,y).tile == Tile::Lamp)
                   {
                     lamps.emplace_back(x, y);
                   }
@@ -634,7 +647,7 @@ int main(int, char**)
               std::uniform_int_distribution<int> lampDist(0, lamps.size() - 1);
               std::tuple<int, int> popPos = lamps[lampDist(rng)];
 
-              popLamp(map, std::get<0>(popPos), std::get<1>(popPos), 0);
+              popLamp(game, std::get<0>(popPos), std::get<1>(popPos), 0);
 
               losePopLampAcc -= losePopLampDt;
             }
@@ -649,8 +662,8 @@ int main(int, char**)
 
           if (losePopPlayerAcc >= losePopPlayerDt)
           {
-            popLamp(map, player_x, player_y, 10);
-            renderPlayer = false;
+            popLamp(game, game.player_x, game.player_y, 10);
+            game.renderPlayer = false;
 
             losing = LoseState::Outro;
           }
@@ -660,7 +673,7 @@ int main(int, char**)
 
         case LoseState::Outro:
         {
-          if (map.numDust == 0)
+          if (game.numDust == 0)
           {
             quit = true;
           }
@@ -669,33 +682,32 @@ int main(int, char**)
         }
       }
 
-      if (map.dirtyLighting)
+      if (game.dirtyLighting)
       {
-        recalculateLighting(map, fov.get());
+        recalculateLighting(game, fov.get());
 
-        for (int y = 0; y < VIEW_HEIGHT; y++)
+        for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
         {
-          for (int x = 0; x < VIEW_WIDTH; x++)
+          for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
           {
-            if (!map.lighting[x+y*VIEW_WIDTH] && map.oldLighting[x+y*VIEW_WIDTH])
+            if (!game.map.at(x,y).lit && game.map.at(x,y).wasLit)
             {
               if (std::bernoulli_distribution(0.5)(rng))
               {
-                map.tiles[x+y*VIEW_WIDTH] = Tile::Wall;
+                game.map.at(x,y).tile = Tile::Wall;
               } else {
-                map.tiles[x+y*VIEW_WIDTH] = Tile::Floor;
+                game.map.at(x,y).tile = Tile::Floor;
               }
             }
           }
         }
 
-        tick(map, 0, 0, VIEW_WIDTH, VIEW_HEIGHT, true);
-        tick(map, 0, 0, VIEW_WIDTH, VIEW_HEIGHT, true);
-        tick(map, 0, 0, VIEW_WIDTH, VIEW_HEIGHT, true);
+        tick(game, true);
+        tick(game, true);
+        tick(game, true);
       }
 
-      render(ren.get(), map, true);
-      //SDL_Delay(50);
+      render(ren.get(), game, true);
     }
   } catch (const sdl_error& ex)
   {
@@ -0,0 +1,127 @@
+#ifndef MAP_H_3AB00D12
+#define MAP_H_3AB00D12
+
+#include <vector>
+#include <algorithm>
+
+template <typename T>
+class Map {
+public:
+
+  Map(
+    int left,
+    int top,
+    int width,
+    int height) :
+      left_(left),
+      top_(top),
+      width_(width),
+      height_(height),
+      data_(width_*height_)
+  {
+  }
+
+  inline int getLeft() const
+  {
+    return left_;
+  }
+
+  inline int getRight() const
+  {
+    return left_ + width_;
+  }
+
+  inline int getTop() const
+  {
+    return top_;
+  }
+
+  inline int getBottom() const
+  {
+    return top_ + height_;
+  }
+
+  inline int getWidth() const
+  {
+    return width_;
+  }
+
+  inline int getHeight() const
+  {
+    return height_;
+  }
+
+  inline int getTrueX(int x) const
+  {
+    return (x - left_);
+  }
+
+  inline int getTrueY(int y) const
+  {
+    return (y - top_);
+  }
+
+  inline bool inBounds(int x, int y) const
+  {
+    return (x >= left_) &&
+           (x < left_ + width_) &&
+           (y >= top_) &&
+           (y < top_ + height_);
+  }
+
+  inline const T& at(int x, int y) const
+  {
+    return data_.at((x - left_) + width_ * (y - top_));
+  }
+
+  inline T& at(int x, int y)
+  {
+    return const_cast<T&>(static_cast<const Map&>(*this).at(x, y));
+  }
+
+  inline const std::vector<T>& data() const
+  {
+    return data_;
+  }
+
+  inline std::vector<T>& data()
+  {
+    return data_;
+  }
+
+  void resize(int newLeft, int newTop, int newWidth, int newHeight)
+  {
+    std::vector<T> newData(newWidth * newHeight);
+
+    int winTop = std::max(top_, newTop);
+    int winBottom = std::min(top_ + height_, newTop + newHeight);
+    int winLeft = std::max(left_, newLeft);
+    int winRight = std::min(left_ + width_, newLeft + newWidth);
+
+    for (int y = winTop; y < winBottom; y++)
+    {
+      std::move(
+        std::next(std::begin(data_), (winLeft - left_) + width_ * (y - top_)),
+        std::next(std::begin(data_), (winRight - left_) + width_ * (y - top_)),
+        std::next(std::begin(newData),
+          (winLeft - newLeft) + newWidth * (y - newTop)));
+    }
+
+    left_ = newLeft;
+    top_ = newTop;
+    width_ = newWidth;
+    height_ = newHeight;
+    data_.swap(newData);
+  }
+
+private:
+
+  int left_;
+  int top_;
+  int width_;
+  int height_;
+
+  std::vector<T> data_;
+};
+
+#endif /* end of include guard: MAP_H_3AB00D12 */